No, because TE is a calculation from the co-efficient and the vehicle weight.

Weight of the vehicle can change during gameplay (for example, an engine with cargo capacity, or a bus), this changes the calculated TE value.

If you're working on setting real-life TE values I wouldn't worry about being super accurate:- TE figures are often 'nominal', i.e. calculated based on weight on the drivers, rather than measured on a train- actual measured TE varied between different engines of the same class - actual TE varies as the engine uses up fuel, water etc- actual TE varies with rail conditions- lots of the figures come from Wikipedia, and train fans in forums call it Liarpedia but eh

Weight of the vehicle can change during gameplay (for example, an engine with cargo capacity, or a bus), this changes the calculated TE value.

If you're working on setting real-life TE values I wouldn't worry about being super accurate:- TE figures are often 'nominal', i.e. calculated based on weight on the drivers, rather than measured on a train- actual measured TE varied between different engines of the same class - actual TE varies as the engine uses up fuel, water etc- actual TE varies with rail conditions- lots of the figures come from Wikipedia, [...]

For locomotives, tractive effort is as well defined as is power. Even for MUs (where tractive effort isn´t really meaningful, but acceleration is the most important figure), it would be meaningful, since additional weight by load (passengers) would be negligible.

You have a point here, insofar that actual TE varies (heavily) with rail condition. But given the fact, that there´s always dry and sunny weather in TTD, this is irrelevant.

I do have the Tractive Effort listed in my Data Sheets/Spread Sheets but I still have to guess and tweak the coefficient in Code and see if that gets close enough to what i need.

Also while TE can change IRL with weight, wear, track conditions and weather, in OpenTTD TE doesnt seem to change (at least in the vehicle info window). LIke someone said its pretty much a sunny summer all the time in OpenTTD except in the sub-arctic where theres snow (which can change if you have a variable snow line GRF like OpenGFX landscape)

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